EP1698488A1 - Vibrating device and method for its control - Google Patents
Vibrating device and method for its control Download PDFInfo
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- EP1698488A1 EP1698488A1 EP06300179A EP06300179A EP1698488A1 EP 1698488 A1 EP1698488 A1 EP 1698488A1 EP 06300179 A EP06300179 A EP 06300179A EP 06300179 A EP06300179 A EP 06300179A EP 1698488 A1 EP1698488 A1 EP 1698488A1
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- vibrations
- signal
- vibratory
- filter
- source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
Definitions
- the present invention relates to a device for attenuating vibrations and driving assistance and a vehicle comprising such a device.
- the invention relates more particularly to an attenuator device intended to be fixed on a structural element, for example the structure of a motor vehicle, said device being also able to warn, in particular by vibrations, the driver of the vehicle of external events related or in connection with the use of the vehicle.
- the invention also relates to a control method of a vibratory element in operating mode either antivibration or driving assistance.
- Anti-vibration devices are known that are able to improve the comfort of the passengers of a motor vehicle by generating specific vibrations and adapted to the vibratory characteristics of a source, in order to mitigate the effects. It is also known that the main vibratory source of the structure of a motor vehicle is constituted by the powertrain, whose low speed operation results in a significant degradation of the comfort of the occupants. To overcome this lack of comfort, it is known to use a vibration generating means, preferably disposed on a structural element of the vehicle. The control of the vibration generating means is usually carried out by a control means which is able to receive a reference signal coming from a means for measuring the vibrations of the vibratory source of the vehicle and which is capable of delivering a driving signal.
- medium vibration generator means for generating determined vibrations adapted to the vibratory characteristics of the source. It is thus known that the control is performed over a limited frequency range, for example only when the engine is operating at low speed. For higher frequency ranges, the control of the vibration generating means is no longer carried out.
- the object of the present invention is to overcome all or part of the disadvantages of the prior art noted above.
- the vibratory device is essentially characterized in that the control means is also able to receive an alert signal for delivering to said vibration generator means a control signal for generating specific vibrations that are unsuited to the vibratory characteristics of the source and intended to be felt by the driver.
- the subject of the invention is also a method for controlling a vibratory element comprising a step of collecting a reference signal reflecting the vibrations emitted by a source, a step of controlling the vibratory element so as to generate counter-vibrations. determined vibrations adapted to the vibratory characteristics of the source in order to mitigate the effects.
- the method according to the invention is essentially characterized in that it comprises a step of collecting an alert signal and a step of controlling the vibratory element so as to generate specific vibrations that are unsuited to the vibratory characteristics of the source. or noise pollution intended to be felt or perceived by the driver.
- FIG. 1 represents a vibratory system embarked on a motor vehicle, comprising notably a GMP 2 powertrain, formed mainly of a heat engine and a transmission box, source of so-called initial vibrations.
- GMP 2 powertrain formed mainly of a heat engine and a transmission box, source of so-called initial vibrations.
- the initial vibrations are represented in FIG. 1 in the form of a wave propagating from the vibratory source 2 of the motor vehicle to the carrier structure thereof.
- a measurement means 4 forming a vibration sensor 4 is associated and placed near the vibratory source 2 so as to deliver a reference signal, denoted REF, which translates the initial vibration VI.
- Said vibration measuring means is preferably a sensor 4 of the accelerometer type.
- the vibratory device is preferably composed of a vibration generator means constituted mainly by one or more generators 6 and capable of generating in particular a vibration of the same pulsation and in phase opposition with the initial vibration transmitted by the source 2.
- the vibratory device also comprises a control means 10 capable of driving at least one of the generators 6 according to the nature of the reference signal REF.
- said control means comprises an adaptive filter 12 which is able to transform the reference signal REF into a control signal C of the vibration generator 6.
- the control means also comprises first sets of filter parameters 14 stored in memory zones and at least one selection unit 18 for selecting one of these first sets 14. Preferably, the selection is made according to the REF reference signal. . The unit 18 is then able to apply the selected set of parameters to the adaptive filter 12.
- the vibration generating means 6 comprises a single vibration generator arranged on an element of the vehicle structure.
- the element of the structure is preferably a cross member disposed substantially at the front of the vehicle, while the single generator 6 is of the drummer type.
- the crossbar on which the drummer is thus secured, cooperates with at least one support element of a powertrain so that the operation of the engine causes vibrations of the crosshead, mainly at idle, that is to say for a frequency close to 25 Hz.
- the counter-vibration generator 6 thus generates under the control of the device 10 counter-vibrations intended to attenuate the initial vibrations generated by the GMP 2, these counter-vibrations are represented in FIG. 1 by a CVI wave propagating from the generator 6.
- the control means 10 comprises, in addition to said first sets 14 of filter parameters, second sets of filter parameters, or mappings, each set of filter parameters being intended to be used by the adaptive filter 12 to transform the signal signal. reference REF so as to drive the generator 6.
- each set of parameters makes it possible to obtain a control signal for a different frequency range.
- the application of the first set of parameters 14 to the adaptive filter 12 makes it possible to generate CVI counter vibrations in phase opposition to vibration emitted by the vibratory source, so as to mitigate the effects.
- the application of the second sets of parameters to the filter 12 makes it possible to generate vibrations VI that are unsuitable for the vibrations emitted by the vibratory source, so as to accentuate the initial vibrations.
- a unit 16 for determining an operating state of the source 2 a unit 17 for determining external events related to or in connection with the use of the vehicle, and a unit 18 for selecting a set of parameters from among said first and second assemblies 14 and 15 are also included in the control device and make it possible to select a set of filter parameters corresponding to a determined operating state of the source 2 or to a degree of danger to transmit this set of settings selected at filter 12.
- the determination and selection units 18 make it possible to select a set of parameters from among said first 14 only from the signal REF delivered by the sensor 4, the determination and choice units 17 allow them to select a set of parameters. set of parameters among said second 15 from an ALT signal delivered by a monitoring system 19 to driving a vehicle.
- the vibration generator According to the selection unit 18 applies to the filter 12 a set of parameters among said first and second sets 14 and 15, the vibration generator generates either counter vibrations determined and adapted to the vibration characteristics of the source 2 in order to mitigate the effects, ie specific vibrations that are unsuited to the vibratory characteristics of the source 2 in order to accentuate or create vibrations of the vehicle structure or noise nuisance, which are preferably intended to be felt or perceived by the driver.
- the system also comprises a sensor 20 for controlling the resulting vibrations which makes it possible to measure the vibrations resulting from the initial vibrations generated by the source 2 and of the vibrations VI or CVI generated by the generator 6.
- the signal delivered by the control sensor 20 is collected by an adjusting unit 22 included in the control device 10 and then transmitted to the filter 12 in order to modify current parameters, thereby causing a convergence towards either a minimum of vibrations or a maximum of vibrations according to the respective values of REF and ALT warning reference signals.
- This method starts with a step 30 of collecting the signal REF delivered by the measuring means 4 reflecting the initial vibrations emitted by the source 2.
- This step 30 is followed by a step 31 of processing the REF signal by the unit 16 to deliver to the selection unit 18 directly the selection command of a set of filter parameters among said first sets 14 of parameters of filtered.
- Step 31 is followed by a step 32 of selecting a first set of filter parameters and a step 33 of applying the selected set of parameters to the filter 12.
- the method also comprises a step 300 of collecting the warning signal ALT delivered by the monitoring system 19 to the driving of a vehicle, a step 301 of processing the ALT signal by the unit 17 to deliver to the unit 18 directly selecting the command for selecting a set of filter parameters from among said second sets of filter parameters.
- Step 301 is followed by a step 302 of selecting a second set of filter parameters and a step 303 of applying the selected set of parameters to filter 12.
- the method also comprises a step 400 for comparing the ALT signal with a threshold S1 produced after the step 30 for collecting the signal REF.
- the threshold S1 makes it possible to check the presence of the ALT signal delivered by the monitoring system 19 to the driving of a vehicle, so as to prefer the warning of the driver of an external event to the treatment of the antivibration device.
- the drummer 6 switches from the operating mode to antivibration to the driving assistance operating mode, regardless of the value of the reference signal.
- the method also comprises a step 40 of collecting a measurement of the vibrations resulting from the initial vibrations emitted by the source 2 and vibrations VI or CVI emitted by the generator 6 and a step 41 of adjusting the parameters of the filter 12 set implemented by the module 22 which makes it possible, by means of known algorithms, to adjust selected parameters of the adaptive filter 12 in such a way as to converge the system towards a minimum of vibrations when first sets 14 of parameters are applied at the filter 12, a maximum of vibrations when second sets of parameters are applied to the filter 12.
- the invention thus makes it possible to obtain a good reactivity of the vibratory device thanks to the use of predetermined sets 14 and 15 of filter parameters.
- the drummer 6 is preferably able to process the antivibration for a control signal having a frequency of between 10 and 1 kHz, and to warn the driver of an external event for a frequency between 10 and 20 kHz.
- the drummer 6 is also able to create an acoustic signal for a control signal having a frequency greater than 100 Hz.
- the device of the invention advantageously reduces the vibrations caused by the operation of an internal combustion engine at idle in order to increase the comfort of the vehicle, but also to create vibrations or noise, or both at the same time, to inform the driver of an external event related to or related to the use of the vehicle.
- the mixer 6 is able to create a noise for a vibratory frequency of about 1 kHz.
- the invention also allows a high adaptability to the differences between the vehicles through the use of an adaptive device for modifying the filter parameters as a function of the resulting vibrations measured, both in vibratory mode and against vibration mode .
- Such an invention is remarkable in that it can be easily implemented and in that it makes it possible to significantly reduce the vibrations of the vehicle structure for specific operating points of the powertrain, and to warn the driver of events that are related or related to the driving of the vehicle.
- Such a vibratory device is remarkable in that it allows control of the mixer 6 on a wider frequency band, preferably between 10 Hz and 20 kHz, in order to process either the antivibration or the warning of the driver. an external event related or related to the use of the vehicle.
Abstract
Description
La présente invention concerne un dispositif atténuateur de vibrations et d'aide à la conduite et un véhicule comportant un tel dispositif.The present invention relates to a device for attenuating vibrations and driving assistance and a vehicle comprising such a device.
L'invention concerne plus particulièrement un dispositif atténuateur destiné à être fixé sur un élément de structure, par exemple la structure d'un véhicule automobile, ledit dispositif étant également apte à avertir notamment par des vibrations le conducteur du véhicule d'événements extérieurs liés ou en rapport avec l'utilisation du véhicule. L'invention concerne également un procédé de pilotage d'un élément vibratoire en mode de fonctionnement soit en antivibratoire, soit d'aide à la conduite.The invention relates more particularly to an attenuator device intended to be fixed on a structural element, for example the structure of a motor vehicle, said device being also able to warn, in particular by vibrations, the driver of the vehicle of external events related or in connection with the use of the vehicle. The invention also relates to a control method of a vibratory element in operating mode either antivibration or driving assistance.
Il est connu des dispositifs anti-vibratoires qui sont aptes à améliorer le confort des passagers d'un véhicule automobile en générant des vibrations déterminées et adaptées aux caractéristiques vibratoires d'une source, afin d'en atténuer les effets. Il est aussi connu que la principale source vibratoire de la structure d'un véhicule automobile est constituée par le groupe motopropulseur, dont le fonctionnement à bas régime se traduit par une dégradation significative du confort des occupants. Pour pallier ce manque de confort, il est connu d'utiliser un moyen générateur de vibrations, de préférence disposé sur un élément de structure du véhicule. Le pilotage du moyen générateur de vibrations s'effectue habituellement par un moyen de commande qui est apte à recevoir un signal de référence provenant d'un moyen de mesure des vibrations de la source vibratoire du véhicule et qui est apte à délivrer un signal de pilotage audit moyen générateur de vibrations pour générer des vibrations déterminées adaptées aux caractéristiques vibratoires de la source. Il est ainsi connu que le pilotage s'effectue sur une plage de fréquences limitée, par exemple uniquement lorsque le moteur fonctionne à bas régime. Pour des plages de fréquences plus élevées, le pilotage du moyen générateur de vibrations ne s'effectue plus.Anti-vibration devices are known that are able to improve the comfort of the passengers of a motor vehicle by generating specific vibrations and adapted to the vibratory characteristics of a source, in order to mitigate the effects. It is also known that the main vibratory source of the structure of a motor vehicle is constituted by the powertrain, whose low speed operation results in a significant degradation of the comfort of the occupants. To overcome this lack of comfort, it is known to use a vibration generating means, preferably disposed on a structural element of the vehicle. The control of the vibration generating means is usually carried out by a control means which is able to receive a reference signal coming from a means for measuring the vibrations of the vibratory source of the vehicle and which is capable of delivering a driving signal. medium vibration generator means for generating determined vibrations adapted to the vibratory characteristics of the source. It is thus known that the control is performed over a limited frequency range, for example only when the engine is operating at low speed. For higher frequency ranges, the control of the vibration generating means is no longer carried out.
La demanderesse a constaté que de tels dispositifs vibratoires ont une mise en oeuvre relativement coûteuse au vu des prestations données, lesquelles se limitent uniquement à une utilisation des dispositifs vibratoires pour des fréquences limitées, c'est-à-dire principalement lorsque le moteur du véhicule fonctionne au ralenti. Par conséquent, l'intérêt de recourir à de tels dispositifs n'est pas généralisable à l'ensemble des véhicules et plus particulièrement pour des véhicules citadins, pour lesquels le coût de fabrication en grande série ne peut s'affranchir d'une telle mise en oeuvre.The Applicant has found that such vibratory devices have a relatively expensive implementation in view of the given services, which are limited only to the use of vibratory devices for limited frequencies, that is to say, mainly when the engine of the vehicle works in slow motion. Therefore, the interest of using such devices can not be generalized to all vehicles and more particularly for city vehicles, for which the cost of mass production can not be freed from such an implementation implemented.
Ainsi, le but de la présente invention est de pallier tout ou partie des inconvénients de l'art antérieur relevés ci-dessus.Thus, the object of the present invention is to overcome all or part of the disadvantages of the prior art noted above.
A cette fin, le dispositif vibratoire selon l'invention, par ailleurs conforme à la définition générique qu'en donne le préambule ci-dessus, est essentiellement caractérisé en ce que le moyen de commande est également apte à recevoir un signal d'alerte pour délivrer audit moyen générateur de vibrations un signal de pilotage pour générer des vibrations déterminées inadaptées aux caractéristiques vibratoires de la source et destinées à être ressenties par le conducteur.To this end, the vibratory device according to the invention, moreover, in accordance with the generic definition given in the preamble above, is essentially characterized in that the control means is also able to receive an alert signal for delivering to said vibration generator means a control signal for generating specific vibrations that are unsuited to the vibratory characteristics of the source and intended to be felt by the driver.
Suivant d'autres caractéristiques de l'invention :
- ledit moyen de commande comporte un filtre adaptatif pour transformer le signal de référence délivré par le moyen de mesure des vibrations en un signal de pilotage dudit moyen générateur de vibrations, une unité de sélection d'un ensemble de paramètres de filtre pour l'application de cet ensemble par le filtre,
- ledit moyen de commande comporte des premiers et seconds ensembles de paramètres de filtre permettant de générer des vibrations de première nature déterminée adaptée aux caractéristiques vibratoires de la source afin d'en atténuer les effets, et de seconde nature déterminée et inadaptée aux caractéristiques vibratoires de la source afin d'être ressenties par le conducteur, lesdits premiers ensembles de paramètres de filtre correspondant à différents états prédéterminés de fonctionnement de ladite source, lesdits seconds ensembles de paramètres de filtre correspondant à différents états prédéterminés de signal,
- un ensemble de paramètres de filtre parmi lesdits premiers ensembles ou lesdits seconds ensembles est sélectionné par l'unité de sélection sélectionne lorsque les moyens de mesure délivrent respectivement uniquement un signal de référence ou un signal d'alerte,
- le dispositif vibratoire comporte des moyens de recueil d'un signal de contrôle des vibrations et une unité d'ajustage des paramètres dudit filtre adaptatif en fonction de ce signal de contrôle,
- le moyen de mesure du signal de référence est un accéléromètre.
- said control means comprises an adaptive filter for transforming the reference signal output by the vibration measuring means into a control signal of said vibration generating means, a selection unit of a set of filter parameters for the application of this set by the filter,
- said control means comprises first and second sets of filter parameters making it possible to generate first-nature-specific vibrations adapted to the vibratory characteristics of the source in order to attenuate their effects, and secondly determined and unsuited to the vibratory characteristics of the source; source for being felt by the driver, said first sets of filter parameters corresponding to different predetermined states of operation of said source, said second sets of filter parameters corresponding to different predetermined signal states,
- a set of filter parameters among said first sets or second sets is selected by the selection unit selected when the measuring means respectively delivers only a reference signal or an alert signal,
- the vibratory device comprises means for collecting a vibration control signal and a unit for adjusting the parameters of said adaptive filter as a function of this control signal,
- the reference signal measuring means is an accelerometer.
L'invention a également pour objet un procédé de pilotage d'un élément vibratoire comprenant une étape de recueil d'un signal de référence traduisant les vibrations émises par une source, une étape de pilotage de l'élément vibratoire de sorte à générer des contre vibrations déterminées adaptées aux caractéristiques vibratoires de la source afin d'en atténuer les effets.The subject of the invention is also a method for controlling a vibratory element comprising a step of collecting a reference signal reflecting the vibrations emitted by a source, a step of controlling the vibratory element so as to generate counter-vibrations. determined vibrations adapted to the vibratory characteristics of the source in order to mitigate the effects.
Le procédé selon l'invention se caractérise essentiellement en ce qu'il comporte une étape de recueil d'un signal d'alerte et une étape de pilotage de l'élément vibratoire de sorte à générer des vibrations déterminées inadaptées aux caractéristiques vibratoires de la source ou des nuisances sonores destinées à être ressenties ou perçues par le conducteur.The method according to the invention is essentially characterized in that it comprises a step of collecting an alert signal and a step of controlling the vibratory element so as to generate specific vibrations that are unsuited to the vibratory characteristics of the source. or noise pollution intended to be felt or perceived by the driver.
Selon d'autres caractéristiques du procédé de l'invention :
- il comporte une étape de sélection du mode de fonctionnement d'aide à la conduite lorsque, indépendamment du signal de référence, un système de surveillance délivre le signal d'alerte,
- le pilotage de l'élément vibratoire consiste soit en une étape de traitement du signal de référence, une étape de sélection d'un ensemble de paramètres de filtre parmi des premiers ensembles, une étape d'application d'un premier ensemble de paramètres sélectionné à un filtre, une étape de filtrage du signal de référence selon le premier ensemble de paramètres de filtre sélectionné, et une étape de génération de contre vibrations déterminées adaptées aux caractéristiques vibratoires de la source,
- soit en une étape de traitement du signal de référence, une étape de sélection d'un ensemble de paramètres de filtre parmi des seconds ensembles, une étape d'application d'un second ensemble de paramètres sélectionné à un filtre, une étape de filtrage du signal de référence selon le second ensemble de paramètres de filtre sélectionné, et une étape de génération de vibrations déterminées inadaptées aux caractéristiques vibratoires de la source,
- la fréquence du signal de pilotage de l'élément vibratoire est comprise entre 10 et 1 kHz pour le mode de fonctionnement en antivibratoire, et est comprise entre 10 et 20 kHz pour le mode de fonctionnement d'aide à la conduite.
- en mode de fonctionnement d'aide à la conduite, le signal de pilotage de l'élément vibratoire a une fréquence supérieure à 100 Hz, de sorte à permettre audit élément vibratoire de créer une alerte sonore.
- il comporte une étape de recueil d'un signal de contrôle des vibrations ressentie par le conducteur et une étape d'ajustage des paramètres dudit filtre adaptatif en fonction de ce signal de contrôle.
- it comprises a step of selecting the driving assistance operating mode when, independently of the reference signal, a monitoring system delivers the warning signal,
- the control of the vibratory element consists either in a step of processing the reference signal, a step of selecting a set of filter parameters among first sets, a step of applying a first set of parameters selected to a filter, a step of filtering the reference signal according to the first set of selected filter parameters, and a step of generating determined counter vibrations adapted to the vibratory characteristics of the source,
- either in a step of processing the reference signal, a step of selecting a set of filter parameters from second sets, a step of applying a second set of parameters selected to a filter, a step of filtering the reference signal according to the second set of filter parameters selected, and a step of generating determined vibrations unsuitable for the vibratory characteristics of the source,
- the frequency of the control signal of the vibratory element is between 10 and 1 kHz for the antivibration mode of operation, and is between 10 and 20 kHz for the driving assistance operating mode.
- in driving assistance operating mode, the control signal of the vibration element has a frequency greater than 100 Hz, so as to allow said vibration element to create an audible alert.
- it comprises a step of collecting a vibration control signal felt by the driver and a step of adjusting the parameters of said adaptive filter according to this control signal.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels :
- la figure 1 représente un schéma bloc général d'un dispositif vibratoire mettant en oeuvre l'invention ;
- la figure 2 représente un organigramme du procédé de l'invention.
- FIG. 1 represents a general block diagram of a vibratory device embodying the invention;
- Figure 2 shows a flowchart of the method of the invention.
La figure 1 représente un système vibratoire embarqué sur un véhicule automobile, comprenant notamment un groupe motopropulseur GMP 2, formé principalement d'un moteur thermique et d'une boite de transmission, source de vibrations dites initiales.FIG. 1 represents a vibratory system embarked on a motor vehicle, comprising notably a
Les vibrations initiales sont représentées sur la figure 1 sous la forme d'une onde se propageant à partir de la source 2 vibratoire du véhicule automobile, à la structure porteuse de celle-ci.The initial vibrations are represented in FIG. 1 in the form of a wave propagating from the
Un moyen 4 de mesure formant capteur de vibrations 4 est associé et placé à proximité de la source vibratoire 2 de manière à délivrer un signal de référence, noté REF, qui traduit les vibrations initiales VI. Ledit moyen de mesure des vibrations est de préférence un capteur 4 du type accéléromètre.A measurement means 4 forming a vibration sensor 4 is associated and placed near the
Le dispositif vibratoire se compose de préférence d'un moyen générateur de vibrations constitué principalement par un ou plusieurs générateurs 6 et apte à générer notamment une vibration de même pulsation et en opposition de phase à la vibration initiale transmise par la source 2.The vibratory device is preferably composed of a vibration generator means constituted mainly by one or more generators 6 and capable of generating in particular a vibration of the same pulsation and in phase opposition with the initial vibration transmitted by the
Le dispositif vibratoire comporte également un moyen 10 de commande apte à piloter au moins l'un des générateurs 6 selon la nature du signal de référence REF. De préférence, ledit moyen de commande comporte un filtre 12 adaptatif qui est apte à transformer le signal de référence REF en un signal de pilotage C du générateur 6 de vibrations.The vibratory device also comprises a control means 10 capable of driving at least one of the generators 6 according to the nature of the reference signal REF. Preferably, said control means comprises an
Le moyen de commande comporte également des premiers ensembles de paramètres de filtre 14 stockés dans des zones mémoire et au moins une unité 18 de sélection d'un de ces premiers ensembles 14. De préférence, la sélection s'effectue selon le signal de référence REF. L'unité 18 est alors apte à appliquer l'ensemble sélectionné de paramètres au filtre 12 adaptatif.The control means also comprises first sets of filter parameters 14 stored in memory zones and at least one
Dans un mode de réalisation préféré, le moyen générateur 6 de vibrations comporte un unique générateur de vibrations agencé sur un élément de la structure du véhicule. L'élément de la structure est de préférence une traverse disposée sensiblement à l'avant du véhicule, tandis que l'unique générateur 6 est du type batteur. La traverse, sur laquelle est ainsi solidarisé le batteur, coopère avec au moins un élément de support d'un groupe motopropulseur de sorte que le fonctionnement du moteur provoque des vibrations de la traverse, principalement au ralenti, c'est-à-dire pour une fréquence voisine de 25 Hz.In a preferred embodiment, the vibration generating means 6 comprises a single vibration generator arranged on an element of the vehicle structure. The element of the structure is preferably a cross member disposed substantially at the front of the vehicle, while the single generator 6 is of the drummer type. The crossbar, on which the drummer is thus secured, cooperates with at least one support element of a powertrain so that the operation of the engine causes vibrations of the crosshead, mainly at idle, that is to say for a frequency close to 25 Hz.
Le générateur 6 de contre-vibrations génère ainsi sous la commande du dispositif 10 des contre-vibrations destinées à atténuer les vibrations initiales générées par le GMP 2, ces contre-vibrations sont représentées sur la figure 1 par une onde CVI se propageant à partir du générateur 6.The counter-vibration generator 6 thus generates under the control of the
Le moyen 10 de pilotage comporte, outre lesdits premiers ensembles 14 de paramètres de filtre, des seconds ensembles 15 de paramètres de filtre, ou cartographies, chaque ensemble de paramètres de filtre étant destiné à être utilisé par le filtre 12 adaptatif pour transformer le signal de référence REF de manière à piloter le générateur 6.The control means 10 comprises, in addition to said first sets 14 of filter parameters, second sets of filter parameters, or mappings, each set of filter parameters being intended to be used by the
Par exemple, chaque ensemble de paramètres permet d'obtenir un signal de commande pour une plage de fréquence différente.For example, each set of parameters makes it possible to obtain a control signal for a different frequency range.
En général, l'application des premiers ensembles 14 de paramètres au filtre 12 adaptatif rend apte la génération de contre vibrations CVI en opposition de phase aux vibrations émises par la source vibratoire, de sorte à en atténuer les effets. L'application des seconds ensembles 15 de paramètres au filtre 12 rend apte la génération de vibrations VI inadaptés aux vibrations émises par la source vibratoire, de sorte à accentuer les vibrations initiales.In general, the application of the first set of parameters 14 to the
Une unité 16 de détermination d'un état de fonctionnement de la source 2, une unité 17 de détermination des événements extérieurs liés ou en rapport avec l'utilisation du véhicule, et une unité 18 de sélection d'un ensemble de paramètres parmi lesdits premiers et seconds ensembles 14 et 15 sont également compris dans le dispositif 10 de commande et permettent de sélectionner un ensemble de paramètres de filtre correspondant soit à un état de fonctionnement déterminé de la source 2, soit à un degré de dangerosité, pour transmettre cet ensemble de paramètres sélectionné au filtre 12.A
Tandis que les unités de détermination 16 et de sélection 18 permettent de sélectionner un ensemble de paramètres parmi lesdits premiers 14 uniquement à partir du signal REF délivré par le capteur 4, les unités de détermination 17 et de sélection 18 permettent quant à elles de sélectionner un ensemble de paramètres parmi lesdits seconds 15 à partir d'un signal ALT délivré par un système 19 de surveillance à la conduite d'un véhicule.While the determination and
Selon que l'unité 18 de sélection applique au filtre 12 un ensemble de paramètres parmi lesdits premiers et seconds ensembles 14 et 15, le générateur de vibration génère soit des contre vibrations déterminées et adaptées aux caractéristiques vibratoires de la source 2 afin d'en atténuer les effets, soit des vibrations déterminées inadaptées aux caractéristiques vibratoires de la source 2 afin d'accentuer ou de créer des vibrations de la structure du véhicule ou des nuisances sonores, lesquelles sont de préférence destinées à être ressenties ou perçues par le conducteur.According to the
Avantageusement, le système comprend également un capteur 20 de contrôle des vibrations résultantes qui permet de mesurer les vibrations résultant des vibrations initiales générées par la source 2 et des vibrations VI ou CVI générées par le générateur 6. Le signal délivré par le capteur de contrôle 20 est recueilli par une unité d'ajustage 22 incluse dans le dispositif 10 de commande, puis transmis au filtre 12 afin d'en modifier des paramètres courants, entraînant de la sorte une convergence vers soit un minimum de vibrations soit un maximum de vibrations selon les valeurs respectives des signaux de référence REF et d'alerte ALT.Advantageously, the system also comprises a
En référence à la figure 2, on va maintenant décrire le procédé de l'invention de manière générale.With reference to FIG. 2, the method of the invention will now be described generally.
Ce procédé débute par une étape 30 de recueil du signal REF délivré par le moyen 4 de mesure traduisant les vibrations initiales émises par la source 2.This method starts with a step 30 of collecting the signal REF delivered by the measuring means 4 reflecting the initial vibrations emitted by the
Cette étape 30 est suivie d'une étape 31 de traitement du signal REF par l'unité 16 pour délivrer à l'unité 18 de sélection directement la commande de sélection d'un ensemble de paramètres de filtre parmi lesdits premiers ensembles 14 de paramètres de filtre.This step 30 is followed by a
L'étape 31 est suivie d'une étape 32 de sélection d'un premier ensemble de paramètres de filtre et d'une étape 33 d'application de l'ensemble de paramètres sélectionné au filtre 12.
S'ensuit une étape 34 de filtrage du signal de référence REF à l'aide de l'ensemble de paramètres de filtre sélectionné pour former le signal de pilotage C et une étape 35 de génération de contre vibrations CVI par le générateur 6.Follows a
Le procédé comporte également une étape 300 de recueil du signal d'alerte ALT délivré par le système 19 de surveillance à la conduite d'un véhicule, une étape 301 de traitement du signal ALT par l'unité 17 pour délivrer à l'unité 18 de sélection directement la commande de sélection d'un ensemble de paramètres de filtre parmi lesdits seconds ensembles 15 de paramètres de filtre.The method also comprises a
L'étape 301 est suivie d'une étape 302 de sélection d'un second ensemble de paramètres de filtre et d'une étape 303 d'application de l'ensemble de paramètres sélectionné au filtre 12.Step 301 is followed by a
Le procédé comporte aussi une étape 400 de comparaison du signal ALT à un seuil S1 réalisée après l'étape 30 de recueil du signal REF.The method also comprises a
De préférence, le seuil S1 permet de vérifier la présence du signal ALT délivré par le système 19 de surveillance à la conduite d'un véhicule, de sorte à préférer l'avertissement du conducteur d'un événement extérieur au traitement de l'antivibratoire. Ainsi, dès que le système 19 de surveillance délivre un signal d'alerte, le batteur 6 bascule du mode de fonctionnement en antivibratoire au mode de fonctionnement d'aide à la conduite, indépendamment de la valeur du signal de référence.Preferably, the threshold S1 makes it possible to check the presence of the ALT signal delivered by the
Avantageusement, le procédé comporte également une étape 40 de recueil d'une mesure des vibrations résultant des vibrations initiales émises par la source 2 et des vibrations VI ou CVI émises par le générateur 6 et une étape 41 d'ajustage de paramètres du filtre 12 mis en oeuvre par le module 22 qui permet, à l'aide d'algorithmes connus, d'ajuster des paramètres sélectionnés du filtre adaptatif 12 de manière à faire converger le système vers soit un minimum de vibrations lorsque des premiers ensembles 14 de paramètres sont appliqués au filtre 12, soit un maximum de vibrations lorsque des seconds ensembles 15 de paramètres sont appliqués au filtre 12.Advantageously, the method also comprises a
L'invention permet ainsi d'obtenir une bonne réactivité du dispositif vibratoire grâce à l'utilisation d'ensembles 14 et 15 prédéterminés de paramètres de filtre.The invention thus makes it possible to obtain a good reactivity of the vibratory device thanks to the use of
Dans le mode de réalisation décrit, le signal de pilotage C délivré par le filtre adaptatif 12 est, tel qu'à l'issue de l'étape 34 :
- soit le signal REF filtré, amplifié et en opposition de phase générant des contre vibrations déterminées et adaptées aux caractéristiques vibratoires de la
source 2 afin d'en atténuer les effets, - soit le signal REF filtré, amplifié et de phase quelconque générant des vibrations déterminées inadaptées aux caractéristiques vibratoires de la
source 2 afin d'accentuer ou de créer des vibrations de la structure du véhicule destinées à être ressenties par le conducteur, ou de créer des nuisances sonores destinées à être perçue par le conducteur.
- either the filtered signal, amplified and in opposition of phase generating counter vibrations determined and adapted to the vibratory characteristics of the
source 2 in order to mitigate the effects, - either the filtered REF signal, amplified and any phase generating vibrations determined unsuitable to the vibration characteristics of the
source 2 to accentuate or create vibrations of the vehicle structure to be felt by the driver, or create nuisance sounds intended to be perceived by the driver.
Dans le mode de réalisation décrit, le batteur 6 est de préférence apte à traiter l'antivibratoire pour un signal de pilotage ayant une fréquence comprise entre 10 et 1 kHz, et d'avertir le conducteur d'un événement extérieur pour une fréquence comprise entre 10 et 20 kHz. Le batteur 6 est également apte à créer un signal acoustique pour un signal de pilotage ayant une fréquence supérieure à 100 Hz.In the embodiment described, the drummer 6 is preferably able to process the antivibration for a control signal having a frequency of between 10 and 1 kHz, and to warn the driver of an external event for a frequency between 10 and 20 kHz. The drummer 6 is also able to create an acoustic signal for a control signal having a frequency greater than 100 Hz.
Ainsi, le dispositif de l'invention permet avantageusement de réduire les vibrations provoquées par le fonctionnement d'un moteur à combustion interne au ralenti afin d'augmenter le confort du véhicule, mais aussi de créer des vibrations ou une nuisance sonore, ou les deux en même temps, afin d'informer le conducteur d'un événement extérieur lié ou en rapport avec l'utilisation du véhicule.Thus, the device of the invention advantageously reduces the vibrations caused by the operation of an internal combustion engine at idle in order to increase the comfort of the vehicle, but also to create vibrations or noise, or both at the same time, to inform the driver of an external event related to or related to the use of the vehicle.
Dans le mode de réalisation décrit, le batteur 6, disposé de préférence sur la traverse du véhicule, transfert une accélération du volant de l'ordre d'environ 0,70 m.s-2 pour une fréquence vibratoire d'environ 75 hertz en mode de fonctionnement en accentuation des vibrations. Pour ce même mode de fonctionnement, la batteur 6 est apte à créer un bruit pour une fréquence vibratoire d'environ 1 kHz.In the embodiment described, the drummer 6, preferably disposed on the cross member of the vehicle, transfers an acceleration of the steering wheel of the order of about 0.70 ms -2 for a vibratory frequency of about 75 hertz in operating mode. operation in accentuation of vibrations. For this same operating mode, the mixer 6 is able to create a noise for a vibratory frequency of about 1 kHz.
De plus, l'invention permet également une forte adaptabilité aux différences entre les véhicules grâce à l'utilisation d'un dispositif adaptatif permettant de modifier les paramètres de filtre en fonction des vibrations résultantes mesurées, tant en mode vibratoire qu'en mode contre vibratoire.In addition, the invention also allows a high adaptability to the differences between the vehicles through the use of an adaptive device for modifying the filter parameters as a function of the resulting vibrations measured, both in vibratory mode and against vibration mode .
Une telle invention est remarquable en ce qu'elle peut être aisément mise en oeuvre et en ce qu'elle permet de réduire significativement les vibrations de la structure du véhicule pour des points de fonctionnement déterminés du groupe motopropulseur, et d'avertir le conducteur d'évènements qui sont liés ou en rapport avec la conduite de son véhicule.Such an invention is remarkable in that it can be easily implemented and in that it makes it possible to significantly reduce the vibrations of the vehicle structure for specific operating points of the powertrain, and to warn the driver of events that are related or related to the driving of the vehicle.
Un tel dispositif vibratoire est remarquable en ce qu'il permet une commande du batteur 6 sur une bande de fréquence plus large, comprise de préférence entre 10 Hz et 20 kHz, afin de traiter soit l'antivibratoire, soit l'avertissement du conducteur d'un événement extérieur lié ou en rapport avec l'utilisation du véhicule.Such a vibratory device is remarkable in that it allows control of the mixer 6 on a wider frequency band, preferably between 10 Hz and 20 kHz, in order to process either the antivibration or the warning of the driver. an external event related or related to the use of the vehicle.
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0550555A FR2882666A1 (en) | 2005-03-02 | 2005-03-02 | VIBRATION DEVICE AND METHOD FOR CONTROLLING A VIBRATION ELEMENT |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1698488A1 true EP1698488A1 (en) | 2006-09-06 |
EP1698488B1 EP1698488B1 (en) | 2008-12-10 |
Family
ID=34980193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06300179A Active EP1698488B1 (en) | 2005-03-02 | 2006-03-01 | Vibrating device and method for its control |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1698488B1 (en) |
AT (1) | ATE416933T1 (en) |
DE (1) | DE602006004093D1 (en) |
FR (1) | FR2882666A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1035844C2 (en) * | 2008-08-19 | 2010-06-15 | Carolus Wilhelmus Michel Van De Sande | ASSISTANCE FOR HORRORED DRIVERS OF VEHICLES IN TRAFFIC. |
CN112264702A (en) * | 2020-09-07 | 2021-01-26 | 江苏悦达延锋安道拓汽车座椅有限公司 | Anti-interference closed welding safety house |
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-
2005
- 2005-03-02 FR FR0550555A patent/FR2882666A1/en not_active Withdrawn
-
2006
- 2006-03-01 AT AT06300179T patent/ATE416933T1/en not_active IP Right Cessation
- 2006-03-01 DE DE602006004093T patent/DE602006004093D1/en active Active
- 2006-03-01 EP EP06300179A patent/EP1698488B1/en active Active
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EP0348691A2 (en) * | 1988-07-01 | 1990-01-03 | Robert Bosch Gmbh | Method and device for tactile distance alarm in a motor vehicle |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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NL1035844C2 (en) * | 2008-08-19 | 2010-06-15 | Carolus Wilhelmus Michel Van De Sande | ASSISTANCE FOR HORRORED DRIVERS OF VEHICLES IN TRAFFIC. |
CN112264702A (en) * | 2020-09-07 | 2021-01-26 | 江苏悦达延锋安道拓汽车座椅有限公司 | Anti-interference closed welding safety house |
Also Published As
Publication number | Publication date |
---|---|
EP1698488B1 (en) | 2008-12-10 |
DE602006004093D1 (en) | 2009-01-22 |
FR2882666A1 (en) | 2006-09-08 |
ATE416933T1 (en) | 2008-12-15 |
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